The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 27, 2000
Filed:
Mar. 03, 1997
Masato Banzai, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
The power supply device for electrical discharge machining includes circuit component elements for converting a voltage from a power supply to a given pulse voltage which can be supplied to a minute gap between an electrode and a workpiece so that electrical discharge can be generated in the minute gap; a substrate on which the circuit component elements are mounted; a highly thermally conductive metal piece member disposed opposed to the substrate and including a cavity portion therein, the cavity portion being fittable with the circuit component elements or being capable of holding the circuit component therein; and, cooling appratus for cooling heat generated by the circuit component elements and conducted to the metal piece member by use of a machining liquid supplied to the minute gap as a cooling medium.